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/** @file
*
* Copyright (c) 2021, NUVIA Inc. All rights reserved.<BR>
* Copyright (c) 2012-2014, ARM Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-2-Clause-Patent
*
**/
#ifndef ARM_SMC_LIB_H_
#define ARM_SMC_LIB_H_
/**
* The size of the SMC arguments are different between AArch64 and AArch32.
* The native size is used for the arguments.
*/
typedef struct {
UINTN Arg0;
UINTN Arg1;
UINTN Arg2;
UINTN Arg3;
UINTN Arg4;
UINTN Arg5;
UINTN Arg6;
UINTN Arg7;
} ARM_SMC_ARGS;
/**
Trigger an SMC call
SMC calls can take up to 7 arguments and return up to 4 return values.
Therefore, the 4 first fields in the ARM_SMC_ARGS structure are used
for both input and output values.
**/
VOID
ArmCallSmc (
IN OUT ARM_SMC_ARGS *Args
);
/** Trigger an SMC call with 3 arguments.
@param Function The SMC function.
@param Arg1 Argument/result.
@param Arg2 Argument/result.
@param Arg3 Argument/result.
@return The SMC error code.
**/
UINTN
ArmCallSmc3 (
IN UINTN Function,
IN OUT UINTN *Arg1 OPTIONAL,
IN OUT UINTN *Arg2 OPTIONAL,
IN OUT UINTN *Arg3 OPTIONAL
);
/** Trigger an SMC call with 2 arguments.
@param Function The SMC function.
@param Arg1 Argument/result.
@param Arg2 Argument/result.
@param Arg3 Result.
@return The SMC error code.
**/
UINTN
ArmCallSmc2 (
IN UINTN Function,
IN OUT UINTN *Arg1 OPTIONAL,
IN OUT UINTN *Arg2 OPTIONAL,
OUT UINTN *Arg3 OPTIONAL
);
/** Trigger an SMC call with 1 argument.
@param Function The SMC function.
@param Arg1 Argument/result.
@param Arg2 Result.
@param Arg3 Result.
@return The SMC error code.
**/
UINTN
ArmCallSmc1 (
IN UINTN Function,
IN OUT UINTN *Arg1 OPTIONAL,
OUT UINTN *Arg2 OPTIONAL,
OUT UINTN *Arg3 OPTIONAL
);
/** Trigger an SMC call with 0 arguments.
@param Function The SMC function.
@param Arg1 Result.
@param Arg2 Result.
@param Arg3 Result.
@return The SMC error code.
**/
UINTN
ArmCallSmc0 (
IN UINTN Function,
OUT UINTN *Arg1 OPTIONAL,
OUT UINTN *Arg2 OPTIONAL,
OUT UINTN *Arg3 OPTIONAL
);
#endif // ARM_SMC_LIB_H_
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